import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_localizations/flutter_localizations.dart';

//静态路由配置
void main() => runApp(const MyApp3());

//定义根目录Widget
class MyApp3 extends StatelessWidget {
  const MyApp3({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      localizationsDelegates: const [
        //初始化默认的 Material 组件本地化
        GlobalMaterialLocalizations.delegate,
        //初始化默认的 通用 Widget 组件本地化
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      //当前区域，如果为null则使用系统区域一般用于语言切换
      //传入两个参数，语言代码，国家代码
      //这里配制为中国
      locale: const Locale('zh', 'CN'),
      //定义当前应用程序所支持的语言环境
      supportedLocales: const [
        Locale('en', 'US'), // English 英文
        Locale('zh', 'CN'), // 中文
      ],
      routes: {
        //默认页面
        "/": (BuildContext context) => const Exam214HomePage(),
      },
    );
  }
}


class Exam214HomePage extends StatefulWidget {
  const Exam214HomePage({Key? key}) : super(key: key);

  @override
  State<Exam214HomePage> createState() => _Exam214HomePageState();
}

class _Exam214HomePageState extends State<Exam214HomePage> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      //页面的头部
      appBar: AppBar(title: const Text("标题")),
      //页面的主内容区
      body: Center(child: Container(width: 224,child: buildTextField2())),
    );
  }

  ///代码清单2-20 TextField 边框
  ///代码路径 lib/code2/code215_TextField.dart
  // 设置上下左右 都有边框
  Widget buildTextField2() {
    return  const TextField(
      //边框样式设置
      decoration: InputDecoration(
        //设置上下左右 都有边框
        border: OutlineInputBorder(
          //设置边框四个角的弧度
          borderRadius: BorderRadius.all(Radius.circular(40)),
        ),
      ),
    );
  }


}
